mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-29 16:04:33 +00:00
5f28b1ff89
Thanks to Bill Wendling for the reminder. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187794 91177308-0d34-0410-b5e6-96231b3b80d8
107 lines
4.1 KiB
ReStructuredText
107 lines
4.1 KiB
ReStructuredText
======================
|
|
LLVM 3.4 Release Notes
|
|
======================
|
|
|
|
.. contents::
|
|
:local:
|
|
|
|
.. warning::
|
|
These are in-progress notes for the upcoming LLVM 3.4 release. You may
|
|
prefer the `LLVM 3.3 Release Notes <http://llvm.org/releases/3.3/docs
|
|
/ReleaseNotes.html>`_.
|
|
|
|
|
|
Introduction
|
|
============
|
|
|
|
This document contains the release notes for the LLVM Compiler Infrastructure,
|
|
release 3.4. Here we describe the status of LLVM, including major improvements
|
|
from the previous release, improvements in various subprojects of LLVM, and
|
|
some of the current users of the code. All LLVM releases may be downloaded
|
|
from the `LLVM releases web site <http://llvm.org/releases/>`_.
|
|
|
|
For more information about LLVM, including information about the latest
|
|
release, please check out the `main LLVM web site <http://llvm.org/>`_. If you
|
|
have questions or comments, the `LLVM Developer's Mailing List
|
|
<http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev>`_ is a good place to send
|
|
them.
|
|
|
|
Note that if you are reading this file from a Subversion checkout or the main
|
|
LLVM web page, this document applies to the *next* release, not the current
|
|
one. To see the release notes for a specific release, please see the `releases
|
|
page <http://llvm.org/releases/>`_.
|
|
|
|
Non-comprehensive list of changes in this release
|
|
=================================================
|
|
|
|
.. NOTE
|
|
For small 1-3 sentence descriptions, just add an entry at the end of
|
|
this list. If your description won't fit comfortably in one bullet
|
|
point (e.g. maybe you would like to give an example of the
|
|
functionality, or simply have a lot to talk about), see the `NOTE` below
|
|
for adding a new subsection.
|
|
|
|
* The regression tests now fail if any command in a pipe fails. To disable it in
|
|
a directory, just add ``config.pipefail = False`` to its ``lit.local.cfg``.
|
|
See :doc:`Lit <CommandGuide/lit>` for the details.
|
|
|
|
* Support for exception handling has been removed from the old JIT. Use MCJIT
|
|
if you need EH support.
|
|
|
|
* The R600 backend is not marked experimental anymore and is built by default.
|
|
|
|
* APFloat::isNormal() was renamed to APFloat::isFiniteNonZero() and
|
|
APFloat::isIEEENormal() was renamed to APFloat::isNormal(). This ensures that
|
|
APFloat::isNormal() conforms to IEEE-754R-2008.
|
|
|
|
* The library call simplification pass has been removed. Its functionality
|
|
has been integrated into the instruction combiner and function attribute
|
|
marking passes.
|
|
|
|
* Support for building using Visual Studio 2008 has been dropped. Use VS 2010
|
|
or later instead. For more information, see the `Getting Started using Visual
|
|
Studio <GettingStartedVS.html>`_ page.
|
|
|
|
* The Loop Vectorizer that was previously enabled for -O3 is now enabled for
|
|
-Os and -O2.
|
|
|
|
* The new SLP Vectorizer is now enabled by default.
|
|
|
|
* llvm-ar now uses the new Object library and produces archives and
|
|
symbol tables in the gnu format.
|
|
|
|
* ... next change ...
|
|
|
|
.. NOTE
|
|
If you would like to document a larger change, then you can add a
|
|
subsection about it right here. You can copy the following boilerplate
|
|
and un-indent it (the indentation causes it to be inside this comment).
|
|
|
|
Special New Feature
|
|
-------------------
|
|
|
|
Makes programs 10x faster by doing Special New Thing.
|
|
|
|
|
|
External Open Source Projects Using LLVM 3.4
|
|
============================================
|
|
|
|
An exciting aspect of LLVM is that it is used as an enabling technology for
|
|
a lot of other language and tools projects. This section lists some of the
|
|
projects that have already been updated to work with LLVM 3.4.
|
|
|
|
|
|
Additional Information
|
|
======================
|
|
|
|
A wide variety of additional information is available on the `LLVM web page
|
|
<http://llvm.org/>`_, in particular in the `documentation
|
|
<http://llvm.org/docs/>`_ section. The web page also contains versions of the
|
|
API documentation which is up-to-date with the Subversion version of the source
|
|
code. You can access versions of these documents specific to this release by
|
|
going into the ``llvm/docs/`` directory in the LLVM tree.
|
|
|
|
If you have any questions or comments about LLVM, please feel free to contact
|
|
us via the `mailing lists <http://llvm.org/docs/#maillist>`_.
|
|
|